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Solar System Exploration - NASA Science
https://science.nasa.gov/solar-system
WEBSolar System Overview. The solar system has one star, eight planets, five dwarf planets, at least 290 moons, more than 1.3 million asteroids, and about 3,900 comets. It is located in an outer spiral arm of the Milky Way galaxy called the Orion Arm, or Orion Spur. Our solar system orbits the center of the galaxy at about 515,000 mph (828,000 kph ...
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Solar System - Wikipedia
https://en.wikipedia.org/wiki/Solar_System
WEBThe Solar System is the gravitationally bound system of the Sun and the objects that orbit it. It was formed 4.6 billion years ago when a dense region of a molecular cloud collapsed, forming the Sun and a protoplanetary disc.
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Solar system | Definition, Planets, Diagram, Videos, & Facts
https://www.britannica.com/science/solar-system
WEB6 days ago · Solar system, assemblage consisting of the Sun and those bodies orbiting it: 8 planets with about 210 known planetary satellites; many asteroids, some with their own satellites; comets and other icy bodies; and vast reaches of highly tenuous gas and dust known as the interplanetary medium.
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Solar System: Facts - NASA Science
https://science.nasa.gov/solar-system/facts/
WEB10 Things. Our solar system is made up of a star, eight planets, and countless smaller bodies such as dwarf planets, asteroids, and comets. Our solar system orbits the center of the Milky Way galaxy at about 515,000 mph (828,000 kph). We’re in one of …
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The solar system—facts and information - National Geographic
https://www.nationalgeographic.com/science/article/the-solar-system
WEBMarch 27, 2019. • 5 min read. The universe is filled with billions of star systems. Located inside galaxies, these cosmic arrangements are made up of at least one star and all the objects that...
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Planets - NASA Science
https://science.nasa.gov/solar-system/planets/
WEBThe solar system has eight planets. Moving outward from the Sun, the planets are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. There are five officially recognized dwarf planets in our solar system.
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In Depth | Our Solar System – NASA Solar System Exploration
https://solarsystem.nasa.gov/solar-system/our-solar-system/in-depth.amp
WEBOur solar system consists of our star, the Sun, and everything bound to it by gravity – the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune; dwarf planets such as Pluto; dozens of moons; and millions of asteroids, comets, and meteoroids.
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Solar System | HubbleSite
https://hubblesite.org/science/solar-system
WEBJan 31, 2024 · Hubble and Pluto. Comets in our Solar System. Observing in Our Own Celestial Backyard. On first glance, our solar system seems to be well understood. It includes a single star, planets, their moons, dwarf planets like Pluto and Ceres, and smaller bodies like asteroids, comets, and the outer solar system Kuiper Belt objects.
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Solar System | NASA Space Place – NASA Science for Kids
https://spaceplace.nasa.gov/menu/explore/solar-system/
WEBApr 17, 2024 · Solar System | NASA Space Place – NASA Science for Kids. Hello, Pluto! In July of 2015, a spacecraft named New Horizons arrived at Pluto after a long journey. It took amazing pictures of this dwarf planet and will continue to study other objects in the Kuiper Belt from 2018 to 2022. Find out more about Pluto. Make a comet on a stick!
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In Depth | Sun – NASA Solar System Exploration
https://solarsystem.nasa.gov/solar-system/sun/in-depth.amp
WEBSize and Distance. Our Sun is a medium-sized star with a radius of about 435,000 miles (700,000 kilometers). Many stars are much larger – but the Sun is far more massive than our home planet: it would take more than 330,000 Earths to match the mass of the Sun, and it would take 1.3 million Earths to fill the Sun's volume.
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